Plastic vs Concrete Tank Cleaning
Raj Babbar · 8 min read
Home › Water Tank Cleaning › Underground Sump Cleaning › New Friends Colony
Underground sump cleaning across New Friends Colony — the large old below-ground sumps on big kothi plots near Jamia, taking the first fill, holding years of silt, and rarely opened. Confined-space safe, discreet. From ₹1,499.
New Friends Colony is an elite colony of large kothis and premium builder floors on generous plots near Jamia, with the community centre at its heart. Most of these big plots run a large private underground sump, some of them old, that stores the DJB supply with occasional borewell backup before pumps lift water to the large overhead tanks. Because the sumps are sizeable and the plots spacious, they hold a lot of water and gather a substantial sediment load below ground where the household never sees it.
KaamGenie cleans these large kothi sumps carefully and discreetly — ventilating and air-testing, pumping out to the sludge, hand-scooping and wet-vacuuming the silt, then jet-washing and disinfecting hygienic before refill. For the overhead tanks on the same plot, see our water tank cleaning in New Friends Colony. This page is specifically about the underground sump, the large old below-ground tank on most NFC plots that goes years unopened.
These are large sumps on big plots, so a good volume of DJB and borewell water passes through, and the sand and dissolved minerals settle at the bottom first, before the pumps lift the clearer water to the overhead tanks. Because the plots are spacious and the sumps generous, water often sits between draws, which lets fine silt and biofilm settle undisturbed across a wide sump floor. Over the years this builds a substantial, undisturbed sediment bed.
Many NFC sumps are decades old and rarely opened — on a large elite plot the household watches the visible overhead tanks and leaves the buried one alone. That leaves standing water over an accumulated sludge bed, stale sealed air in the closed sump, and in the older structures, hairline cracks that let ground seepage in. Our crews treat every New Friends Colony sump as a confined space, ventilating and air-testing before entry and checking the walls inside.
No travel charge anywhere in New Friends Colony. The final price is confirmed on the call before we come — it depends only on tank size and access.
See it done in 45 seconds
Watch our web story on how a tank is really cleaned — drain, de-sludge, jet-wash, disinfect.
We reach every pocket of New Friends Colony — and there’s no travel charge to any of them:
Every locality in Delhi stores different water, and that decides how fast a tank fouls. This is New Friends Colony’s profile from The Delhi Water Index, built from our field observations across 250+ localities.
Indicative field characterisation, not a certified lab test. BIS IS 10500: TDS 500 mg/L acceptable, 2,000 permissible. Check any Delhi area →
“Do you clean kothi sumps in A Block New Friends Colony?” Yes. We service large private underground sumps on the big kothi and builder-floor plots across New Friends Colony — A, B and C blocks and near the community centre and Maharani Bagh. Tell us your block and the rough sump size and we will send a discreet, confined-space trained crew with pumps sized for a large kothi sump.
“What does a kothi sump clean cost in New Friends Colony?” It starts at ₹1,499 for a small sump up to 1,000 litres, priced by capacity. Most NFC sumps are larger — 1,001–2,000 litres at ₹1,799–2,200 or 2,001–5,000 litres at ₹2,500–3,500. Very large plot reservoirs are quoted after we assess the capacity.
“Can you come the same day?” For a single kothi sump, often yes if you call in the morning, as we cover New Friends Colony regularly. If the sump is old and has gone years without opening, we may suggest a booked slot to allow time for proper ventilation, full sludge removal and a structural check rather than rush a long-neglected tank.
“Why is our New Friends Colony sump so full of sludge?” Mostly because it is large and rarely opened. Being buried on a big plot, it takes the first fill of DJB and borewell water so sand and minerals settle there, and because the water sits between draws on a spacious plot, fine silt and biofilm build undisturbed across the wide floor over the years.
“Will your crew check the old sump for cracks?” Yes. Many NFC sumps are decades old, so after pumping out and jet-washing we dry-check the walls and floor for cracks and seepage that let groundwater in. We report anything structural with photos so you can seal it before it contaminates your stored water, alongside the standard before and after record on WhatsApp.
See our complete water tank cleaning services in Delhi NCR — pricing, process, tank types and full city coverage.
Beyond water tank cleaning, KaamGenie is rolling out a full lineup of home services across Delhi NCR — see our complete list of 12 home services we offer or will be launching through 2026. New to tank cleaning? Read our guide on how to pick the right water tank cleaning service in Delhi — what to look for, what to avoid, and the questions that separate trustworthy crews from quick-job operators.
Rooftop plastic tanks
₹699+ →Kothi sumps & underground tanks
₹1,499+ →Apartments & RWAs
Bulk pricing →FSSAI-compliant cleaning
₹2,500+ →टंकी साफ़ करने वाले
हिन्दी पढ़ें →View all water tank cleaning guides →
All pockets and lanes of New Friends Colony covered. If your specific block or society isn’t named in the sub-areas above, just call — we almost certainly cover it.
Same crew, same 6-step process, same-day where possible. Pick any locality below for local pricing and the tanks we typically find there.
Book a slot — we can usually fit you in today or tomorrow.